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Thermal Overload
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- PC reliability?
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- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
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Calibration procedure for high capacity tanks
New Replies:
Mr Roy,
thanks for the confidence shown in my abilities, but no, i seriously have no clue of how...
By Roy Matson on 17 July, 2009 - 10:12 pm -
Yes, you should quote it but make sure you give a good explanation of why you propose to use your...
Seems we have reached a dead end. Weights are not possible and desired accuracy beyond reach. In...
By Sam on 16 July, 2009 - 6:10 pm -
If you need 0.1% or better, calibration weights is the only method. That too without any dummy load...
By Roy Matson on 16 July, 2009 - 11:21 am -
I have used digital cells (by Hardy I think). They have a chip included with the characteristics of...
By solids i do mean fines and other granular ingredients. The client insists on having live +...
By Patrick on 15 July, 2009 - 3:03 pm -
A system with dummy load cell will not work with solids generally. What is your accuracy...
By Roy Matson on 15 July, 2009 - 10:49 am -
Since you have ruled out water and fixed weights would not be practical perhaps just do an...
Hi Hemal,
I understand your situation. To the best of my knowledge there is no direct solution...
Water is obvious, and i have used it for smaller capacities. but the volumes involved are large....
By Roy Matson on 14 July, 2009 - 7:00 pm -
Since they are tanks, would it be possible to batch in water using an accurate meter e.g. coreolis....
How to select load cell?
New Replies:
By tushar on 18 July, 2009 - 12:36 am -
pls give me your mail id, mine is tushar.inst [at] yahoo.co.in
tushar...
Deceide the total gross load acting on the reactor, i.e,
The empty weight of reactor
The weight...
Mechanical gauges need ATEX
load cell calibration
New Replies:
By Roy Matson on 16 July, 2009 - 11:09 am -
To put it simply you multiply the load on the load cell by the belt speed.
You need to figure...
While i have little experience with Belt weighing, a lot of information can be had at...
How to map variable length data to holding registers?
New Replies:
By M Griffin on 16 July, 2009 - 12:39 am -
You said that you're not sure about "the max data length of many variables". They're 32...
how to measure a mixed ngl stream that has 1 or more components at a boiling point?
New Replies:
I understand E&H has entered into the entrained gas capability with Promass A, i think. Promass...
By Sri on 9 July, 2009 - 9:57 am -
Hi
As you said the coriolis flow meters are the best suitable solution.
The coriolis meters...
By Rohit Chandak on 8 July, 2009 - 3:18 am -
Since it was a operational problem to damage ANNUBAR, I would still select ANNUBAR if that...
Problem dealing with ADC0804 with potentiometer
New Replies:
By M.RAZA on 15 July, 2009 - 1:35 am -
you need two potentiometers, pin 1 of the 1st pot is vcc n the 3rd pin is GND.
1.The 2pin of...
How do we get measurement uncertainty if the measurement comes from the differential of others (two flow meters)
New Replies:
Thanks Rohit,
The discussion actually starts there. The project is evaluating either we need to...
By Rohit Chandak on 14 July, 2009 - 9:46 am -
It is very difficult to confirm the uncertainity of the third meter especially when the flow...
Weighing scale design. Load cells are parallely connected adc count variation
New Replies:
Hi Sathiya,
The best solution would be to use 4 loadcells with same outputs. The outputs of...
Is a commercial Intrinsically Safe barrier likely to provide protection to the Analog input from lightning damage?
New Replies:
By wboyes on 9 July, 2009 - 11:34 pm -
Curt's right. And Ditek IS still around. www.ditekcorp.com
Walt Boyes
Editor in Chief
Control...
By Curt Wuollet on 9 July, 2009 - 9:39 pm -
There are a lot of things you can try. I've had good luck with surge suppressors made by folks who...
By Alan Balcombe on 9 July, 2009 - 8:47 pm -
Surge protection devices (SPDs) protecting each signal wire, may have helped - by handling surges...
By wboyes on 9 July, 2009 - 4:13 pm -
No, they aren't intended to be lightning arrestors.
One of the things that could likely have...
By Don Lupo on 9 July, 2009 - 9:18 am -
Nothing will withstand a direct hit by lightening. However, this sounds like a great case for a...
Need a portable type flow meter
New Replies:
By Rohit Chandak on 8 July, 2009 - 3:06 am -
Selecting a Portable Instrument could some time be complex as you should be very clear on your...
By Roy Matson on 30 June, 2009 - 10:55 am -
I had good results with one of the clamp on Time of Flight ultrasonics for measuring liquid. It...
Errors reading temperature in mitsubishi thermocouple extension blocks.
New Replies:
By Curt Wuollet on 7 July, 2009 - 2:32 pm -
The thing to do here is take a sensitive multimeter and look at the voltages around the ckt. These...
By Roy Matson on 7 July, 2009 - 10:52 am -
Re your grounded thermocouples:
It seems obvious that the channels of your PLC are not isolated...
Hi ,
I am making a data acqusation system with 20 K type thermocouples. my connection are:
...
Need A suitable Meter for Substation Temperature monitoring
New Replies:
By Don Lupo on 7 July, 2009 - 11:17 am -
It sounds like you're looking for an "ambient temperature alarm" for your box or panel. ...
By Ramu on 7 July, 2009 - 9:57 am -
Hi,
You can use a Dial Thermometer with a Switching Capability. With this, you can apply the...
By Roy Matson on 6 July, 2009 - 11:54 pm -
Walts suggestions are good if you have a local PLC with analog input or need to monitor the...
By wboyes on 6 July, 2009 - 10:28 am -
Any conventional temperature transmitter can be used this way. Just buy one with an alarm contact...
Need a laboratory to calibrate a heat treat oven
Flow measurement of fuel gas with various densities
New Replies:
By Doug McClelland on 1 July, 2009 - 12:18 pm -
Is the topic of this post still an active need? If so, I may be able to assist with a device...
Best way to communicate with a WAGO device from Matlab? (Considering OPC server vs. TCP connection + .dll)
New Replies:
Hello all,
can anyone help me to result this problem ;
I have a wago-I/O-system 750-301 and...
I'm seeking advice on a replacement device for an ADAM-6017, that's approximately the same size.
New Replies:
By M Griffin on 30 June, 2009 - 9:44 pm -
I've never bought anything from the following, so I can't exactly recommend them. However, you...
need guidelines regarding simulation (simulink model) of bldc motor
New Replies:
BLDC motor has few sources of torque ripple related with motor itself or control. Which type of...
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